root / hw / qdev.c @ a0a7573b
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/*
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* Dynamic device configuration and creation.
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*
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* Copyright (c) 2009 CodeSourcery
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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/* The theory here is that it should be possible to create a machine without
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knowledge of specific devices. Historically board init routines have
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passed a bunch of arguments to each device, requiring the board know
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exactly which device it is dealing with. This file provides an abstract
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API for device configuration and initialization. Devices will generally
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inherit from a particular bus (e.g. PCI or I2C) rather than
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this API directly. */
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#include "net.h" |
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#include "qdev.h" |
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#include "sysemu.h" |
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#include "monitor.h" |
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static int qdev_hotplug = 0; |
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static bool qdev_hot_added = false; |
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static bool qdev_hot_removed = false; |
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/* This is a nasty hack to allow passing a NULL bus to qdev_create. */
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static BusState *main_system_bus;
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static void main_system_bus_create(void); |
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DeviceInfo *device_info_list; |
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static BusState *qbus_find_recursive(BusState *bus, const char *name, |
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const BusInfo *info);
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static BusState *qbus_find(const char *path); |
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/* Register a new device type. */
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void qdev_register(DeviceInfo *info)
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{ |
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assert(info->size >= sizeof(DeviceState));
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assert(!info->next); |
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info->next = device_info_list; |
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device_info_list = info; |
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} |
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static DeviceInfo *qdev_find_info(BusInfo *bus_info, const char *name) |
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{ |
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DeviceInfo *info; |
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/* first check device names */
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for (info = device_info_list; info != NULL; info = info->next) { |
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if (bus_info && info->bus_info != bus_info)
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continue;
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if (strcmp(info->name, name) != 0) |
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continue;
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return info;
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} |
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/* failing that check the aliases */
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for (info = device_info_list; info != NULL; info = info->next) { |
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if (bus_info && info->bus_info != bus_info)
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continue;
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if (!info->alias)
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continue;
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if (strcmp(info->alias, name) != 0) |
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continue;
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return info;
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} |
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return NULL; |
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} |
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static DeviceState *qdev_create_from_info(BusState *bus, DeviceInfo *info)
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{ |
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DeviceState *dev; |
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assert(bus->info == info->bus_info); |
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dev = g_malloc0(info->size); |
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dev->info = info; |
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dev->parent_bus = bus; |
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qdev_prop_set_defaults(dev, dev->info->props); |
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qdev_prop_set_defaults(dev, dev->parent_bus->info->props); |
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qdev_prop_set_globals(dev); |
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QLIST_INSERT_HEAD(&bus->children, dev, sibling); |
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if (qdev_hotplug) {
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assert(bus->allow_hotplug); |
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dev->hotplugged = 1;
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qdev_hot_added = true;
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} |
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dev->instance_id_alias = -1;
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dev->state = DEV_STATE_CREATED; |
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return dev;
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} |
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/* Create a new device. This only initializes the device state structure
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and allows properties to be set. qdev_init should be called to
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initialize the actual device emulation. */
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DeviceState *qdev_create(BusState *bus, const char *name) |
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{ |
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DeviceState *dev; |
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dev = qdev_try_create(bus, name); |
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if (!dev) {
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if (bus) {
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hw_error("Unknown device '%s' for bus '%s'\n", name,
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bus->info->name); |
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} else {
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hw_error("Unknown device '%s' for default sysbus\n", name);
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} |
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} |
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return dev;
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} |
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DeviceState *qdev_try_create(BusState *bus, const char *name) |
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{ |
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DeviceInfo *info; |
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if (!bus) {
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bus = sysbus_get_default(); |
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} |
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info = qdev_find_info(bus->info, name); |
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if (!info) {
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return NULL; |
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} |
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return qdev_create_from_info(bus, info);
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} |
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static void qdev_print_devinfo(DeviceInfo *info) |
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{ |
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error_printf("name \"%s\", bus %s",
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info->name, info->bus_info->name); |
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if (info->alias) {
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error_printf(", alias \"%s\"", info->alias);
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} |
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if (info->desc) {
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error_printf(", desc \"%s\"", info->desc);
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} |
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if (info->no_user) {
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error_printf(", no-user");
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} |
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error_printf("\n");
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} |
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static int set_property(const char *name, const char *value, void *opaque) |
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{ |
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DeviceState *dev = opaque; |
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if (strcmp(name, "driver") == 0) |
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return 0; |
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if (strcmp(name, "bus") == 0) |
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return 0; |
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if (qdev_prop_parse(dev, name, value) == -1) { |
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return -1; |
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} |
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return 0; |
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} |
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int qdev_device_help(QemuOpts *opts)
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{ |
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const char *driver; |
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DeviceInfo *info; |
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Property *prop; |
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driver = qemu_opt_get(opts, "driver");
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if (driver && !strcmp(driver, "?")) { |
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for (info = device_info_list; info != NULL; info = info->next) { |
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if (info->no_user) {
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continue; /* not available, don't show */ |
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} |
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qdev_print_devinfo(info); |
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} |
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return 1; |
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} |
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if (!qemu_opt_get(opts, "?")) { |
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return 0; |
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} |
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info = qdev_find_info(NULL, driver);
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if (!info) {
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return 0; |
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} |
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for (prop = info->props; prop && prop->name; prop++) {
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/*
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* TODO Properties without a parser are just for dirty hacks.
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* qdev_prop_ptr is the only such PropertyInfo. It's marked
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* for removal. This conditional should be removed along with
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* it.
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*/
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if (!prop->info->parse) {
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continue; /* no way to set it, don't show */ |
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} |
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error_printf("%s.%s=%s\n", info->name, prop->name, prop->info->name);
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} |
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return 1; |
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} |
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DeviceState *qdev_device_add(QemuOpts *opts) |
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{ |
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const char *driver, *path, *id; |
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DeviceInfo *info; |
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DeviceState *qdev; |
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BusState *bus; |
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driver = qemu_opt_get(opts, "driver");
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if (!driver) {
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qerror_report(QERR_MISSING_PARAMETER, "driver");
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return NULL; |
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} |
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/* find driver */
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info = qdev_find_info(NULL, driver);
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if (!info || info->no_user) {
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qerror_report(QERR_INVALID_PARAMETER_VALUE, "driver", "a driver name"); |
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error_printf_unless_qmp("Try with argument '?' for a list.\n");
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return NULL; |
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} |
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/* find bus */
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path = qemu_opt_get(opts, "bus");
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if (path != NULL) { |
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bus = qbus_find(path); |
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if (!bus) {
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return NULL; |
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} |
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if (bus->info != info->bus_info) {
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qerror_report(QERR_BAD_BUS_FOR_DEVICE, |
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driver, bus->info->name); |
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return NULL; |
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} |
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} else {
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bus = qbus_find_recursive(main_system_bus, NULL, info->bus_info);
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if (!bus) {
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qerror_report(QERR_NO_BUS_FOR_DEVICE, |
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info->name, info->bus_info->name); |
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return NULL; |
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} |
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} |
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if (qdev_hotplug && !bus->allow_hotplug) {
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qerror_report(QERR_BUS_NO_HOTPLUG, bus->name); |
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return NULL; |
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} |
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/* create device, set properties */
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qdev = qdev_create_from_info(bus, info); |
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id = qemu_opts_id(opts); |
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if (id) {
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qdev->id = id; |
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} |
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if (qemu_opt_foreach(opts, set_property, qdev, 1) != 0) { |
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qdev_free(qdev); |
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return NULL; |
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} |
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if (qdev_init(qdev) < 0) { |
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qerror_report(QERR_DEVICE_INIT_FAILED, driver); |
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return NULL; |
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} |
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qdev->opts = opts; |
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return qdev;
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} |
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/* Initialize a device. Device properties should be set before calling
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this function. IRQs and MMIO regions should be connected/mapped after
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calling this function.
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On failure, destroy the device and return negative value.
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Return 0 on success. */
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int qdev_init(DeviceState *dev)
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{ |
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int rc;
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assert(dev->state == DEV_STATE_CREATED); |
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rc = dev->info->init(dev, dev->info); |
288 |
if (rc < 0) { |
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qdev_free(dev); |
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return rc;
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} |
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if (dev->info->vmsd) {
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vmstate_register_with_alias_id(dev, -1, dev->info->vmsd, dev,
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dev->instance_id_alias, |
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dev->alias_required_for_version); |
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} |
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dev->state = DEV_STATE_INITIALIZED; |
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if (dev->hotplugged && dev->info->reset) {
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dev->info->reset(dev); |
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} |
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return 0; |
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} |
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void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, |
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int required_for_version)
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{ |
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assert(dev->state == DEV_STATE_CREATED); |
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dev->instance_id_alias = alias_id; |
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dev->alias_required_for_version = required_for_version; |
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} |
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int qdev_unplug(DeviceState *dev)
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{ |
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if (!dev->parent_bus->allow_hotplug) {
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qerror_report(QERR_BUS_NO_HOTPLUG, dev->parent_bus->name); |
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return -1; |
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} |
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assert(dev->info->unplug != NULL);
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qdev_hot_removed = true;
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return dev->info->unplug(dev);
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} |
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static int qdev_reset_one(DeviceState *dev, void *opaque) |
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{ |
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if (dev->info->reset) {
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dev->info->reset(dev); |
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} |
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return 0; |
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} |
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BusState *sysbus_get_default(void)
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{ |
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if (!main_system_bus) {
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main_system_bus_create(); |
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} |
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return main_system_bus;
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} |
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static int qbus_reset_one(BusState *bus, void *opaque) |
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{ |
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if (bus->info->reset) {
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return bus->info->reset(bus);
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} |
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return 0; |
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} |
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void qdev_reset_all(DeviceState *dev)
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{ |
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qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL);
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} |
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void qbus_reset_all_fn(void *opaque) |
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{ |
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BusState *bus = opaque; |
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qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL);
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} |
360 |
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/* can be used as ->unplug() callback for the simple cases */
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int qdev_simple_unplug_cb(DeviceState *dev)
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{ |
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/* just zap it */
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qdev_free(dev); |
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return 0; |
367 |
} |
368 |
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/* Like qdev_init(), but terminate program via error_report() instead of
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returning an error value. This is okay during machine creation.
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Don't use for hotplug, because there callers need to recover from
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failure. Exception: if you know the device's init() callback can't
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fail, then qdev_init_nofail() can't fail either, and is therefore
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usable even then. But relying on the device implementation that
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way is somewhat unclean, and best avoided. */
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void qdev_init_nofail(DeviceState *dev)
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{ |
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DeviceInfo *info = dev->info; |
380 |
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if (qdev_init(dev) < 0) { |
382 |
error_report("Initialization of device %s failed", info->name);
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exit(1);
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} |
385 |
} |
386 |
|
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/* Unlink device from bus and free the structure. */
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void qdev_free(DeviceState *dev)
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{ |
390 |
BusState *bus; |
391 |
Property *prop; |
392 |
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393 |
if (dev->state == DEV_STATE_INITIALIZED) {
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394 |
while (dev->num_child_bus) {
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bus = QLIST_FIRST(&dev->child_bus); |
396 |
qbus_free(bus); |
397 |
} |
398 |
if (dev->info->vmsd)
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vmstate_unregister(dev, dev->info->vmsd, dev); |
400 |
if (dev->info->exit)
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401 |
dev->info->exit(dev); |
402 |
if (dev->opts)
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qemu_opts_del(dev->opts); |
404 |
} |
405 |
QLIST_REMOVE(dev, sibling); |
406 |
for (prop = dev->info->props; prop && prop->name; prop++) {
|
407 |
if (prop->info->free) {
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408 |
prop->info->free(dev, prop); |
409 |
} |
410 |
} |
411 |
g_free(dev); |
412 |
} |
413 |
|
414 |
void qdev_machine_creation_done(void) |
415 |
{ |
416 |
/*
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417 |
* ok, initial machine setup is done, starting from now we can
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418 |
* only create hotpluggable devices
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419 |
*/
|
420 |
qdev_hotplug = 1;
|
421 |
} |
422 |
|
423 |
bool qdev_machine_modified(void) |
424 |
{ |
425 |
return qdev_hot_added || qdev_hot_removed;
|
426 |
} |
427 |
|
428 |
/* Get a character (serial) device interface. */
|
429 |
CharDriverState *qdev_init_chardev(DeviceState *dev) |
430 |
{ |
431 |
static int next_serial; |
432 |
|
433 |
/* FIXME: This function needs to go away: use chardev properties! */
|
434 |
return serial_hds[next_serial++];
|
435 |
} |
436 |
|
437 |
BusState *qdev_get_parent_bus(DeviceState *dev) |
438 |
{ |
439 |
return dev->parent_bus;
|
440 |
} |
441 |
|
442 |
void qdev_init_gpio_in(DeviceState *dev, qemu_irq_handler handler, int n) |
443 |
{ |
444 |
assert(dev->num_gpio_in == 0);
|
445 |
dev->num_gpio_in = n; |
446 |
dev->gpio_in = qemu_allocate_irqs(handler, dev, n); |
447 |
} |
448 |
|
449 |
void qdev_init_gpio_out(DeviceState *dev, qemu_irq *pins, int n) |
450 |
{ |
451 |
assert(dev->num_gpio_out == 0);
|
452 |
dev->num_gpio_out = n; |
453 |
dev->gpio_out = pins; |
454 |
} |
455 |
|
456 |
qemu_irq qdev_get_gpio_in(DeviceState *dev, int n)
|
457 |
{ |
458 |
assert(n >= 0 && n < dev->num_gpio_in);
|
459 |
return dev->gpio_in[n];
|
460 |
} |
461 |
|
462 |
void qdev_connect_gpio_out(DeviceState * dev, int n, qemu_irq pin) |
463 |
{ |
464 |
assert(n >= 0 && n < dev->num_gpio_out);
|
465 |
dev->gpio_out[n] = pin; |
466 |
} |
467 |
|
468 |
void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
|
469 |
{ |
470 |
qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a);
|
471 |
if (nd->vlan)
|
472 |
qdev_prop_set_vlan(dev, "vlan", nd->vlan);
|
473 |
if (nd->netdev)
|
474 |
qdev_prop_set_netdev(dev, "netdev", nd->netdev);
|
475 |
if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
|
476 |
qdev_prop_exists(dev, "vectors")) {
|
477 |
qdev_prop_set_uint32(dev, "vectors", nd->nvectors);
|
478 |
} |
479 |
nd->instantiated = 1;
|
480 |
} |
481 |
|
482 |
BusState *qdev_get_child_bus(DeviceState *dev, const char *name) |
483 |
{ |
484 |
BusState *bus; |
485 |
|
486 |
QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
487 |
if (strcmp(name, bus->name) == 0) { |
488 |
return bus;
|
489 |
} |
490 |
} |
491 |
return NULL; |
492 |
} |
493 |
|
494 |
int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn,
|
495 |
qbus_walkerfn *busfn, void *opaque)
|
496 |
{ |
497 |
DeviceState *dev; |
498 |
int err;
|
499 |
|
500 |
if (busfn) {
|
501 |
err = busfn(bus, opaque); |
502 |
if (err) {
|
503 |
return err;
|
504 |
} |
505 |
} |
506 |
|
507 |
QLIST_FOREACH(dev, &bus->children, sibling) { |
508 |
err = qdev_walk_children(dev, devfn, busfn, opaque); |
509 |
if (err < 0) { |
510 |
return err;
|
511 |
} |
512 |
} |
513 |
|
514 |
return 0; |
515 |
} |
516 |
|
517 |
int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn,
|
518 |
qbus_walkerfn *busfn, void *opaque)
|
519 |
{ |
520 |
BusState *bus; |
521 |
int err;
|
522 |
|
523 |
if (devfn) {
|
524 |
err = devfn(dev, opaque); |
525 |
if (err) {
|
526 |
return err;
|
527 |
} |
528 |
} |
529 |
|
530 |
QLIST_FOREACH(bus, &dev->child_bus, sibling) { |
531 |
err = qbus_walk_children(bus, devfn, busfn, opaque); |
532 |
if (err < 0) { |
533 |
return err;
|
534 |
} |
535 |
} |
536 |
|
537 |
return 0; |
538 |
} |
539 |
|
540 |
static BusState *qbus_find_recursive(BusState *bus, const char *name, |
541 |
const BusInfo *info)
|
542 |
{ |
543 |
DeviceState *dev; |
544 |
BusState *child, *ret; |
545 |
int match = 1; |
546 |
|
547 |
if (name && (strcmp(bus->name, name) != 0)) { |
548 |
match = 0;
|
549 |
} |
550 |
if (info && (bus->info != info)) {
|
551 |
match = 0;
|
552 |
} |
553 |
if (match) {
|
554 |
return bus;
|
555 |
} |
556 |
|
557 |
QLIST_FOREACH(dev, &bus->children, sibling) { |
558 |
QLIST_FOREACH(child, &dev->child_bus, sibling) { |
559 |
ret = qbus_find_recursive(child, name, info); |
560 |
if (ret) {
|
561 |
return ret;
|
562 |
} |
563 |
} |
564 |
} |
565 |
return NULL; |
566 |
} |
567 |
|
568 |
DeviceState *qdev_find_recursive(BusState *bus, const char *id) |
569 |
{ |
570 |
DeviceState *dev, *ret; |
571 |
BusState *child; |
572 |
|
573 |
QLIST_FOREACH(dev, &bus->children, sibling) { |
574 |
if (dev->id && strcmp(dev->id, id) == 0) |
575 |
return dev;
|
576 |
QLIST_FOREACH(child, &dev->child_bus, sibling) { |
577 |
ret = qdev_find_recursive(child, id); |
578 |
if (ret) {
|
579 |
return ret;
|
580 |
} |
581 |
} |
582 |
} |
583 |
return NULL; |
584 |
} |
585 |
|
586 |
static void qbus_list_bus(DeviceState *dev) |
587 |
{ |
588 |
BusState *child; |
589 |
const char *sep = " "; |
590 |
|
591 |
error_printf("child busses at \"%s\":",
|
592 |
dev->id ? dev->id : dev->info->name); |
593 |
QLIST_FOREACH(child, &dev->child_bus, sibling) { |
594 |
error_printf("%s\"%s\"", sep, child->name);
|
595 |
sep = ", ";
|
596 |
} |
597 |
error_printf("\n");
|
598 |
} |
599 |
|
600 |
static void qbus_list_dev(BusState *bus) |
601 |
{ |
602 |
DeviceState *dev; |
603 |
const char *sep = " "; |
604 |
|
605 |
error_printf("devices at \"%s\":", bus->name);
|
606 |
QLIST_FOREACH(dev, &bus->children, sibling) { |
607 |
error_printf("%s\"%s\"", sep, dev->info->name);
|
608 |
if (dev->id)
|
609 |
error_printf("/\"%s\"", dev->id);
|
610 |
sep = ", ";
|
611 |
} |
612 |
error_printf("\n");
|
613 |
} |
614 |
|
615 |
static BusState *qbus_find_bus(DeviceState *dev, char *elem) |
616 |
{ |
617 |
BusState *child; |
618 |
|
619 |
QLIST_FOREACH(child, &dev->child_bus, sibling) { |
620 |
if (strcmp(child->name, elem) == 0) { |
621 |
return child;
|
622 |
} |
623 |
} |
624 |
return NULL; |
625 |
} |
626 |
|
627 |
static DeviceState *qbus_find_dev(BusState *bus, char *elem) |
628 |
{ |
629 |
DeviceState *dev; |
630 |
|
631 |
/*
|
632 |
* try to match in order:
|
633 |
* (1) instance id, if present
|
634 |
* (2) driver name
|
635 |
* (3) driver alias, if present
|
636 |
*/
|
637 |
QLIST_FOREACH(dev, &bus->children, sibling) { |
638 |
if (dev->id && strcmp(dev->id, elem) == 0) { |
639 |
return dev;
|
640 |
} |
641 |
} |
642 |
QLIST_FOREACH(dev, &bus->children, sibling) { |
643 |
if (strcmp(dev->info->name, elem) == 0) { |
644 |
return dev;
|
645 |
} |
646 |
} |
647 |
QLIST_FOREACH(dev, &bus->children, sibling) { |
648 |
if (dev->info->alias && strcmp(dev->info->alias, elem) == 0) { |
649 |
return dev;
|
650 |
} |
651 |
} |
652 |
return NULL; |
653 |
} |
654 |
|
655 |
static BusState *qbus_find(const char *path) |
656 |
{ |
657 |
DeviceState *dev; |
658 |
BusState *bus; |
659 |
char elem[128]; |
660 |
int pos, len;
|
661 |
|
662 |
/* find start element */
|
663 |
if (path[0] == '/') { |
664 |
bus = main_system_bus; |
665 |
pos = 0;
|
666 |
} else {
|
667 |
if (sscanf(path, "%127[^/]%n", elem, &len) != 1) { |
668 |
assert(!path[0]);
|
669 |
elem[0] = len = 0; |
670 |
} |
671 |
bus = qbus_find_recursive(main_system_bus, elem, NULL);
|
672 |
if (!bus) {
|
673 |
qerror_report(QERR_BUS_NOT_FOUND, elem); |
674 |
return NULL; |
675 |
} |
676 |
pos = len; |
677 |
} |
678 |
|
679 |
for (;;) {
|
680 |
assert(path[pos] == '/' || !path[pos]);
|
681 |
while (path[pos] == '/') { |
682 |
pos++; |
683 |
} |
684 |
if (path[pos] == '\0') { |
685 |
return bus;
|
686 |
} |
687 |
|
688 |
/* find device */
|
689 |
if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
690 |
assert(0);
|
691 |
elem[0] = len = 0; |
692 |
} |
693 |
pos += len; |
694 |
dev = qbus_find_dev(bus, elem); |
695 |
if (!dev) {
|
696 |
qerror_report(QERR_DEVICE_NOT_FOUND, elem); |
697 |
if (!monitor_cur_is_qmp()) {
|
698 |
qbus_list_dev(bus); |
699 |
} |
700 |
return NULL; |
701 |
} |
702 |
|
703 |
assert(path[pos] == '/' || !path[pos]);
|
704 |
while (path[pos] == '/') { |
705 |
pos++; |
706 |
} |
707 |
if (path[pos] == '\0') { |
708 |
/* last specified element is a device. If it has exactly
|
709 |
* one child bus accept it nevertheless */
|
710 |
switch (dev->num_child_bus) {
|
711 |
case 0: |
712 |
qerror_report(QERR_DEVICE_NO_BUS, elem); |
713 |
return NULL; |
714 |
case 1: |
715 |
return QLIST_FIRST(&dev->child_bus);
|
716 |
default:
|
717 |
qerror_report(QERR_DEVICE_MULTIPLE_BUSSES, elem); |
718 |
if (!monitor_cur_is_qmp()) {
|
719 |
qbus_list_bus(dev); |
720 |
} |
721 |
return NULL; |
722 |
} |
723 |
} |
724 |
|
725 |
/* find bus */
|
726 |
if (sscanf(path+pos, "%127[^/]%n", elem, &len) != 1) { |
727 |
assert(0);
|
728 |
elem[0] = len = 0; |
729 |
} |
730 |
pos += len; |
731 |
bus = qbus_find_bus(dev, elem); |
732 |
if (!bus) {
|
733 |
qerror_report(QERR_BUS_NOT_FOUND, elem); |
734 |
if (!monitor_cur_is_qmp()) {
|
735 |
qbus_list_bus(dev); |
736 |
} |
737 |
return NULL; |
738 |
} |
739 |
} |
740 |
} |
741 |
|
742 |
void qbus_create_inplace(BusState *bus, BusInfo *info,
|
743 |
DeviceState *parent, const char *name) |
744 |
{ |
745 |
char *buf;
|
746 |
int i,len;
|
747 |
|
748 |
bus->info = info; |
749 |
bus->parent = parent; |
750 |
|
751 |
if (name) {
|
752 |
/* use supplied name */
|
753 |
bus->name = g_strdup(name); |
754 |
} else if (parent && parent->id) { |
755 |
/* parent device has id -> use it for bus name */
|
756 |
len = strlen(parent->id) + 16;
|
757 |
buf = g_malloc(len); |
758 |
snprintf(buf, len, "%s.%d", parent->id, parent->num_child_bus);
|
759 |
bus->name = buf; |
760 |
} else {
|
761 |
/* no id -> use lowercase bus type for bus name */
|
762 |
len = strlen(info->name) + 16;
|
763 |
buf = g_malloc(len); |
764 |
len = snprintf(buf, len, "%s.%d", info->name,
|
765 |
parent ? parent->num_child_bus : 0);
|
766 |
for (i = 0; i < len; i++) |
767 |
buf[i] = qemu_tolower(buf[i]); |
768 |
bus->name = buf; |
769 |
} |
770 |
|
771 |
QLIST_INIT(&bus->children); |
772 |
if (parent) {
|
773 |
QLIST_INSERT_HEAD(&parent->child_bus, bus, sibling); |
774 |
parent->num_child_bus++; |
775 |
} else if (bus != main_system_bus) { |
776 |
/* TODO: once all bus devices are qdevified,
|
777 |
only reset handler for main_system_bus should be registered here. */
|
778 |
qemu_register_reset(qbus_reset_all_fn, bus); |
779 |
} |
780 |
} |
781 |
|
782 |
BusState *qbus_create(BusInfo *info, DeviceState *parent, const char *name) |
783 |
{ |
784 |
BusState *bus; |
785 |
|
786 |
bus = g_malloc0(info->size); |
787 |
bus->qdev_allocated = 1;
|
788 |
qbus_create_inplace(bus, info, parent, name); |
789 |
return bus;
|
790 |
} |
791 |
|
792 |
static void main_system_bus_create(void) |
793 |
{ |
794 |
/* assign main_system_bus before qbus_create_inplace()
|
795 |
* in order to make "if (bus != main_system_bus)" work */
|
796 |
main_system_bus = g_malloc0(system_bus_info.size); |
797 |
main_system_bus->qdev_allocated = 1;
|
798 |
qbus_create_inplace(main_system_bus, &system_bus_info, NULL,
|
799 |
"main-system-bus");
|
800 |
} |
801 |
|
802 |
void qbus_free(BusState *bus)
|
803 |
{ |
804 |
DeviceState *dev; |
805 |
|
806 |
while ((dev = QLIST_FIRST(&bus->children)) != NULL) { |
807 |
qdev_free(dev); |
808 |
} |
809 |
if (bus->parent) {
|
810 |
QLIST_REMOVE(bus, sibling); |
811 |
bus->parent->num_child_bus--; |
812 |
} else {
|
813 |
assert(bus != main_system_bus); /* main_system_bus is never freed */
|
814 |
qemu_unregister_reset(qbus_reset_all_fn, bus); |
815 |
} |
816 |
g_free((void*)bus->name);
|
817 |
if (bus->qdev_allocated) {
|
818 |
g_free(bus); |
819 |
} |
820 |
} |
821 |
|
822 |
#define qdev_printf(fmt, ...) monitor_printf(mon, "%*s" fmt, indent, "", ## __VA_ARGS__) |
823 |
static void qbus_print(Monitor *mon, BusState *bus, int indent); |
824 |
|
825 |
static void qdev_print_props(Monitor *mon, DeviceState *dev, Property *props, |
826 |
const char *prefix, int indent) |
827 |
{ |
828 |
char buf[64]; |
829 |
|
830 |
if (!props)
|
831 |
return;
|
832 |
while (props->name) {
|
833 |
/*
|
834 |
* TODO Properties without a print method are just for dirty
|
835 |
* hacks. qdev_prop_ptr is the only such PropertyInfo. It's
|
836 |
* marked for removal. The test props->info->print should be
|
837 |
* removed along with it.
|
838 |
*/
|
839 |
if (props->info->print) {
|
840 |
props->info->print(dev, props, buf, sizeof(buf));
|
841 |
qdev_printf("%s-prop: %s = %s\n", prefix, props->name, buf);
|
842 |
} |
843 |
props++; |
844 |
} |
845 |
} |
846 |
|
847 |
static void qdev_print(Monitor *mon, DeviceState *dev, int indent) |
848 |
{ |
849 |
BusState *child; |
850 |
qdev_printf("dev: %s, id \"%s\"\n", dev->info->name,
|
851 |
dev->id ? dev->id : "");
|
852 |
indent += 2;
|
853 |
if (dev->num_gpio_in) {
|
854 |
qdev_printf("gpio-in %d\n", dev->num_gpio_in);
|
855 |
} |
856 |
if (dev->num_gpio_out) {
|
857 |
qdev_printf("gpio-out %d\n", dev->num_gpio_out);
|
858 |
} |
859 |
qdev_print_props(mon, dev, dev->info->props, "dev", indent);
|
860 |
qdev_print_props(mon, dev, dev->parent_bus->info->props, "bus", indent);
|
861 |
if (dev->parent_bus->info->print_dev)
|
862 |
dev->parent_bus->info->print_dev(mon, dev, indent); |
863 |
QLIST_FOREACH(child, &dev->child_bus, sibling) { |
864 |
qbus_print(mon, child, indent); |
865 |
} |
866 |
} |
867 |
|
868 |
static void qbus_print(Monitor *mon, BusState *bus, int indent) |
869 |
{ |
870 |
struct DeviceState *dev;
|
871 |
|
872 |
qdev_printf("bus: %s\n", bus->name);
|
873 |
indent += 2;
|
874 |
qdev_printf("type %s\n", bus->info->name);
|
875 |
QLIST_FOREACH(dev, &bus->children, sibling) { |
876 |
qdev_print(mon, dev, indent); |
877 |
} |
878 |
} |
879 |
#undef qdev_printf
|
880 |
|
881 |
void do_info_qtree(Monitor *mon)
|
882 |
{ |
883 |
if (main_system_bus)
|
884 |
qbus_print(mon, main_system_bus, 0);
|
885 |
} |
886 |
|
887 |
void do_info_qdm(Monitor *mon)
|
888 |
{ |
889 |
DeviceInfo *info; |
890 |
|
891 |
for (info = device_info_list; info != NULL; info = info->next) { |
892 |
qdev_print_devinfo(info); |
893 |
} |
894 |
} |
895 |
|
896 |
int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data) |
897 |
{ |
898 |
QemuOpts *opts; |
899 |
|
900 |
opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict);
|
901 |
if (!opts) {
|
902 |
return -1; |
903 |
} |
904 |
if (!monitor_cur_is_qmp() && qdev_device_help(opts)) {
|
905 |
qemu_opts_del(opts); |
906 |
return 0; |
907 |
} |
908 |
if (!qdev_device_add(opts)) {
|
909 |
qemu_opts_del(opts); |
910 |
return -1; |
911 |
} |
912 |
return 0; |
913 |
} |
914 |
|
915 |
int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
916 |
{ |
917 |
const char *id = qdict_get_str(qdict, "id"); |
918 |
DeviceState *dev; |
919 |
|
920 |
dev = qdev_find_recursive(main_system_bus, id); |
921 |
if (NULL == dev) { |
922 |
qerror_report(QERR_DEVICE_NOT_FOUND, id); |
923 |
return -1; |
924 |
} |
925 |
return qdev_unplug(dev);
|
926 |
} |
927 |
|
928 |
static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size) |
929 |
{ |
930 |
int l = 0; |
931 |
|
932 |
if (dev && dev->parent_bus) {
|
933 |
char *d;
|
934 |
l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size); |
935 |
if (dev->parent_bus->info->get_fw_dev_path) {
|
936 |
d = dev->parent_bus->info->get_fw_dev_path(dev); |
937 |
l += snprintf(p + l, size - l, "%s", d);
|
938 |
g_free(d); |
939 |
} else {
|
940 |
l += snprintf(p + l, size - l, "%s", dev->info->name);
|
941 |
} |
942 |
} |
943 |
l += snprintf(p + l , size - l, "/");
|
944 |
|
945 |
return l;
|
946 |
} |
947 |
|
948 |
char* qdev_get_fw_dev_path(DeviceState *dev)
|
949 |
{ |
950 |
char path[128]; |
951 |
int l;
|
952 |
|
953 |
l = qdev_get_fw_dev_path_helper(dev, path, 128);
|
954 |
|
955 |
path[l-1] = '\0'; |
956 |
|
957 |
return strdup(path);
|
958 |
} |